Odpowiedź:
[tex]40 *\frac{3}{4} = \\40 : 4 = 10 * 3 = 30[/tex]
[tex]15*\frac{1}{5}=\\15 : 5 = 3 * 1 = 3[/tex]
[tex]28*\frac{3}{8}=\\28 : 8 = 3,5 * 3 = 10,5 = 10\frac{1}{2}[/tex]
3/4 to 75% więc 75% z 40 to 30
1/5 to 20% więc 20% z 15 to 3
3/8 to 0,38% więc 0,38% z 28 to 10,6
